期刊
WATER RESEARCH
卷 42, 期 20, 页码 4905-4914出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.watres.2008.09.008
关键词
Acetochlor; Alachlor; Dimethenamid; Metolachlor; Atrazine; Triazines
资金
- American Water Works Association Research Foundation/U.S
- Environmental Protection Agency [02903]
- Environmental Protection Agency
Treated drinking water samples from 12 water utilities in the Midwestern United States were collected during Fall 2003 and Spring 2004 and were analyzed for selected neutral degradates of chloroacetamide herbicides, along with related compounds. Target analytes included 20 neutral chloroacetamide degradates, six ionic chloroacetamide degradates, four parent chloroacetamide herbicides, three triazine herbicides, and two neutral triazine degradates. in the fall samples, 17 of 20 neutral chloroacetamide degradates were detected in the finished drinking water, while 19 of 20 neutral chloroacetamide clegraclates were detected in the spring. Median concentrations for the neutral chloroacetamide degradates were similar to 2-60 ng/L during both sampling periods. Concentrations measured in the fall samples of treated water were nearly the same as those measured in source waters, despite the variety of treatment trains employed. Significant removals (average of 40% for all compounds) were only found in the spring samples at those utilities that employed activated carbon. (C) 2008 Elsevier Ltd. All rights reserved.
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